JP2002039848A - Distributing mechanism for weighing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an amount of articles undistributed to remain, in a distributing mechanism for a weighing equipment for storing the articles temporarily to be distributed into plural hoppers arranged in a lower side thereof. SOLUTION: This distributing mechanism 21 is included in the weighing equipment, and is an article distributing mechanism for storing the articles temporarily to be distributed into the hoppers 24, 25 arranged in the lower side. The mechanism 21 is provided with a cylindrical member 61, a bottom plate 62, a driving motor and a control part. The bottom plate 62 forms a storage space S for storing the articles with the cylindrical member 61. The drive motor turn-moves the cylindrical member 61 and the bottom plate 62. The control part controls the driving motor to turn-move the cylindrical member 61 and the bottom plate 62, so as to drop the articles into either of the hoppers 24, 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sorting mechanism for a measuring instrument, and more particularly to a sorting mechanism for sorting articles before or after being weighed into a plurality of paths.

[0002]

2. Description of the Related Art It is generally considered desirable to perform combination weighing in order to perform weighing at high speed and with high accuracy. In combination weighing, the weight and number of articles stored in each of the plurality of hoppers are weighed by a load cell (weight detector), a combination of the weighed values is calculated, and a plurality of hoppers having a weight within a predetermined range are selected. Articles are collected from these hoppers. As a result, an aggregate of a predetermined weight or a predetermined number of articles can be obtained.

A weighing instrument for performing such combination weighing is described in Japanese Patent Application Laid-Open No. Hei 7-306086. In this apparatus, an object to be weighed (hereinafter referred to as an article) is dropped from a pool hopper to one of a pair of weighing hoppers. The pool hopper has two opening / closing gates, and can sort articles to a pair of weighing hoppers.

[0004] In the apparatus disclosed in the above publication, articles before weighing are sorted, but when discharging the articles after weighing, the articles are also sorted.

[0005]

FIG. 12 shows the operation of the sorting mechanism used in the conventional weighing machine. The distribution mechanism mainly includes a cylindrical side wall 1 and two bottom portions 2.
And 3. The bottom parts 2 and 3 are as shown in FIG.
As shown in FIG. 12 and FIG. When the bottoms 2 and 3 are closed, the side wall 1 and the bottoms 2 and 3 form a storage space for storing articles. This sorting mechanism is used for sorting 2
It is arranged above hoppers 4 and 5, which are two paths. Here, the bottom 2 is opened when the articles in the storage space are dropped onto the hopper 4, and the bottom 3 is opened when the articles are dropped onto the hopper 5.

The sorting mechanism having the structure shown in FIG. 12 has few problems when handling general articles. However, depending on the goods, the goods in the storage space are
In other words, the articles cannot be completely discharged into the weighing apparatus, that is, the weighing operation in the subsequent process is disturbed, or the entire articles weighed in the previous process are not discharged. This may cause a situation where filling cannot be performed.

For example, in the case of an article such as natto having adhesiveness, the article may not completely fall into the hoppers 4 and 5 even when the bottoms 2 and 3 are opened. That is, FIG.
As shown in FIG. 12B, even when the operation of dropping the article P1 onto the hopper 4 is performed, a part P1a of the article remains on the bottom 3 side due to adhesion or the like (see FIG. 12C), or as shown in FIG. Even if the operation of dropping the article P2 onto the hopper 5 is performed,
A part P2a of the article may remain on the side (see FIG. 12 (f)). In this case, since the amounts of the parts P1a and P2a of the articles remaining on the bottoms 2 and 3 cannot be grasped,
The accuracy of the quantity of articles falling to 5 will be low.

SUMMARY OF THE INVENTION It is an object of the present invention to reduce the amount of articles that remain without being sorted to a path in a sorting mechanism of a measuring device for temporarily storing articles and sorting the articles to a plurality of paths arranged below. It is in.

[0009]

According to a first aspect of the present invention, there is provided a sorting mechanism which is included in a weighing machine and temporarily stores articles before or after being weighed.
This is a mechanism for distributing articles to a plurality of routes arranged below. The distribution mechanism includes a side wall, a bottom, a driving unit, and a controller. The bottom, along with the side wall,
A storage space for storing articles can be formed. The driving means moves at least the side wall. The control unit controls the driving unit, and causes the article to drop on any path by turning the side wall so that the lower end of the side wall swings.

In this sorting mechanism, the conveyed articles are first temporarily stored in a storage space formed by the side walls and the bottom. Then, when dropping an article on any of the routes, at least the side wall portion is turned.

Conventionally, a method has been adopted in which a plurality of bottoms are provided and articles are sorted depending on which bottom is opened. Therefore, there is a possibility that a problem may occur that the article does not adhere to the closed bottom and does not drop. On the other hand, in the mechanism of the present invention, since the side wall portion is swung, the side wall portion can be moved so that the bottom portion is not below the side wall portion. For this reason, in the present mechanism, the article hardly remains on the bottom portion, and even if the article has adhesiveness, almost all of the article in the storage space falls to one of the paths. In addition, it is possible to sort which path the article is dropped by changing the turning movement direction of the side wall portion.

In this case, the side wall is pivoted so that the lower end of the side wall swings. By changing the swinging direction, it is possible to change the distribution destination of the articles. As described above, since the side wall portion is pivotally moved, the configuration of the driving means is low in cost and compact as compared with the case where the side wall portion is moved in parallel.

Further, in this case, since the side wall is swiveled so that the lower end of the side wall swings, when the upper part of the side wall is used as an input section for articles, the input section hardly moves, and the sorting is performed. Spillage of the article due to is suppressed. That is, the cleaning property of the measuring device including the main distribution mechanism is improved.

According to a second aspect of the present invention, there is provided a sorting mechanism.
Wherein the side wall is formed by a substantially vertical surface. Further, the bottom is formed with a substantially horizontal curved surface, and does not hinder the swing of the side wall.

In this case, since the side wall is formed by a substantially vertical surface, it is possible to prevent the article from adhering to the side wall.
Further, since the bottom portion is substantially horizontal and the side wall portion is substantially vertical, when the side wall portion moves with respect to the bottom portion, the side wall portion serves as a scraper, and articles adhered to the substantially horizontal bottom portion are scraped off. It is.

According to a third aspect of the present invention, there is provided a sorting mechanism.
Or the mechanism according to 2, wherein the driving means moves both the side wall and the bottom so as to be away from each other. Here, not only the side wall but also the bottom is moved together with the side wall. For this reason, the amount of movement required to remove the bottom from below the side wall is reduced, and particularly when the side wall is swirled, the inclination of the side wall when dropping the article is reduced.
The slope can be kept close to vertical.

By using a link mechanism or the like, it becomes possible to move both the side wall and the bottom so that they are separated from each other by one drive source. A distribution mechanism according to a fourth aspect is the mechanism according to the third aspect, wherein the storage space formed by the side wall and the bottom is disposed above the two paths so as to extend over both paths.

In this case, since the storage space formed by the side wall portion and the bottom portion is disposed so as to straddle the two routes to which the distribution is to be made, the movement amount of the side wall portion and the bottom portion can be increased when allocating to either of the routes. Can be kept small.

According to a fifth aspect of the present invention, there is provided a sorting mechanism.
5. The mechanism according to any one of items 1 to 4, wherein the control unit controls the driving unit to vibrate the side wall on the path when the article is dropped on the path.

Here, when an article is dropped on a route,
The side wall is vibrating. For this reason, even when the article has adhesiveness and the article sticks to the side wall and is difficult to separate, most of the article is sifted off by the vibration of the side wall.

The side wall may be vibrated by reciprocating the side wall by a small amount, or the side wall may be vibrated by hitting the side wall.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A combination weighing machine 10 including a sorting mechanism 21 according to one embodiment of the present invention is shown in FIGS. 1 is a longitudinal sectional view of the apparatus, FIG. 2 is a top view of the apparatus, FIG.
FIG. 2 is a partial front sectional view of the apparatus. This combination weigher 10
, The articles such as natto supplied to the input chute 18 located on the rear side are continuously collected to a predetermined weight,
9 is a device for transferring to a packaging device or the like in a later process.

<Overall Configuration> The combination weighing device 10 mainly includes a frame 12, 20 weighing hoppers 13, 20.
Two forced trough feed mechanisms 14, two common troughs 16,
An electromagnetic feeder 17 provided for each common trough 16, a charging chute 18, and a discharge collecting chute 1
9, a distribution mechanism 21, and distribution hoppers 25, 25
, A transport conveyor 29, and a control unit 30 that controls each drive unit (such as a drive motor).

The weighing hopper 13 and the forced vertical feed mechanism 14 are paired, and a total of two sets of 10 pairs of 5 rows and 2 columns are arranged symmetrically. Two sets of the common trough 16 and the electromagnetic feeder 17 are arranged symmetrically, and each set is provided in a form corresponding to a set composed of 10 pairs of the weighing hopper 13 and the forced vertical feed mechanism 14. That is, in the combination weighing machine 10, the pair of the weighing hopper 13 and the forced vertical feed mechanism 14 of 5 rows and 2 columns and the common trough 1
6 and the electromagnetic feeder 17 constitute one set, and the same set is disposed on each of the left and right sides. One throw chute 18 is provided for each of these two sets. The article supplied to the central portion 18a of the input chute 18 is divided into right and left, and the article is dropped from the lower opening 18b to each common trough 16.

<Common Trough and Electromagnetic Feeder> The common trough 16 is a member for feeding an article descending from the input chute 18 forward (to the left in FIG. 1) and sending it to the forced vertical feed mechanism 14. The common trough 16 includes left and right dish portions 16a and a cylindrical portion 16b.

The rear portion of the plate 16a is located below the input chute 18 and receives articles falling from the input chute 18. Ten circular holes are formed in the lower surface of the front part of the plate portion 16a, and the cylindrical portion 16b extends downward from each circular hole. These circular holes and the cylindrical portion 16b
Are provided in each common trough 16, and five rows are arranged in front and rear two columns in plan view.

The electromagnetic feeder 17 supports the lower surface of the dish 16a of the common trough 16 with a support member, and vibrates the support member back and forth. The article that has descended from the input chute 18 to the rear of the dish 16a is fed to the front of the dish 16a by this vibration.

<Forced vertical feed mechanism> Forced vertical feed mechanism 14
Is a mechanism for temporarily holding the articles to be put into the weighing hopper 13 and sending the articles stored in the front part of the common trough 16 downward. The forced vertical feed mechanism 14 rotates the screw by the rotation of the drive motor 52 to forcibly feed the article into the lower space.

The forced vertical feed mechanism 14 mainly includes a cylindrical member 14a, a gate mechanism 14b for opening and closing a lower opening of the cylindrical member 14a, a screw disposed in the cylindrical member 14a, and a driving mechanism for rotating the screw. And a motor 52.

The cylindrical member 14a is a cylindrical member whose top and bottom are open. The upper part of the cylindrical member 14a has a trumpet shape that opens upward, and the lower part of the cylindrical part 16b of the common trough 16 is disposed in this part. Also, the cylindrical member 14a
Inside (the central part) is a screw.

The gate mechanism 14b includes a drive motor 14c
(See FIG. 4) and a mechanism including a gate member. The gate member is a member that can close the lower opening of the tubular member 14a, and rotates by the operation of the drive motor 14c. As the gate member rotates, the lower opening of the tubular member 14a is switched between a closed state and an open state.

The drive motor 52 is disposed above the front portion of the common trough 16 and is fixed to the frame 12 with the rotation axis being on the lower side. A screw is connected to the rotation shaft of the drive motor 52 via a connection rod.

<Measuring Hopper> The measuring hopper 13 includes a cylindrical main body 13a, a gate mechanism 13b capable of closing a lower opening of the main body 13a, and a load cell 13c (see FIG. 4) for measuring the weight of articles in the main body 13a. It is composed of The main body 13a is disposed directly below the cylindrical member 14a of the forced vertical feed mechanism 14. The gate mechanism 13b is a mechanism including a drive motor 13d and a gate member. The gate member is a member that can close the lower opening of the main body 13a, and rotates by the operation of the drive motor 13d. As the gate member rotates, the lower opening of the main body 13a is switched between a closed state and an open state.

Similarly to the upper compulsory vertical feed mechanism 14 in the pair, the weighing hopper 13 has five rows in each of the left and right sets, and is arranged in front and rear two columns (in plan view).
In other words, ten weighing hoppers 13 are arranged symmetrically.

<Discharge collective chute>
Below the set of individual weighing hoppers 13, a discharge collecting chute 19 is arranged. These discharge collecting chutes 19
Is fixed to the frame 12 and serves to collect articles falling from several weighing hoppers 13 and combine them into one.

<Distributing Mechanism> The distributing mechanism 21 temporarily stores the weighed articles collected by the discharge collecting chute 19 and has two distributing hoppers 24 disposed below the discharge port of the discharging collecting chute 19. , 25 for distributing articles.

The distributing mechanism 21 mainly includes a tubular member (side wall portion) 61, a bottom plate (bottom portion) 62,
And a drive unit. (Cylinder Member) The cylinder member 61 is a rectangular tubular member having an open top and bottom, and the upper part thereof is fixed to a turning shaft 64 rotatably supported by a support 63. Specifically, a mounting portion 65 is formed on the back surface of the cylindrical member 61, and the mounting portion 65 is fixed to a turning shaft 64 by a setting portion 64 b
Engages. Further, two roller receiving portions 65a extending downward from the mounting portion 65 are disposed so as to sandwich rollers 75 of a driving portion described later.

(Bottom Plate) The bottom plate 62, together with the tubular member 61, can form a storage space S (see FIG. 5) for storing articles. The storage space S is formed by connecting the lower opening of the cylindrical member 61 to the bottom plate 6.
Occurs when 2 is blocking. Also, the bottom plate 62
Has an arc shape centered on the turning center 64a of the turning shaft 64 (see FIG. 7), and is formed slightly longer than the width of the lower opening of the cylindrical member 61 (see FIG. 5). The bottom plate 62 is connected to a pivot 64 by a connecting member 66. The lower part of the connecting member 66 is fixed to the bottom plate 62, and the upper part is pivotally supported by the end of the turning shaft 64. Therefore, the bottom plate 62 is supported so as to be pivotable about the pivot 64. The connecting member 66 includes
Two roller receiving portions 66a are formed so as to sandwich rollers 76 of a driving portion described later from both sides.

Since the distributing mechanism 21 is arranged at the position shown in FIG. 5, the storage space S has two hoppers 2.
4 and 25, it straddles both hoppers 24 and 25. (Driving Unit) The driving unit has a driving motor 71, and turns the cylindrical member 61 and the bottom plate 62 around the turning shaft 64 so as to move in opposite directions. The driving unit includes a driving motor 71, a link mechanism 72, a rotating shaft 73, a rotating plate 7
4. Rollers 75, 76, etc. The drive motor 71 is a servo motor capable of fine rotation control and rotation direction control, and is controlled by the control unit 30 described later. The link mechanism 72 reduces the rotation of the drive motor 71 and transmits the rotation to the rotation shaft 73. The rotating shaft 73 penetrates through the support 63, and a rotating plate 74 is fixed to a tip of the rotating shaft 73. A roller 75 is rotatably supported on an upper portion of the rotating plate 74, and a roller 76 is rotatably supported on a lower portion of the rotating plate 74. Rollers 75 and 76 are both cylindrical members 61
Extending towards. A cylindrical member 61 is provided on both sides of the roller 75.
The two roller receiving portions 65 a of the connecting member 66 fixed to the bottom plate 62 are disposed on both sides of the roller 76. Therefore, the rotation shaft 73
When the rotating plate 74 rotates and the rollers 75 and 76 move, the cylindrical member 61 and the bottom plate 62 rotate in directions opposite to each other as shown in FIG. Note that the rotating shaft 73 and the rollers 75,
Each of the distances to 76 is set such that the turning angle of the cylindrical member 61 and the turning angle of the bottom plate 62 on the opposite side are substantially equal.

<Distribution hopper>
Reference numeral 25 is provided for temporarily holding the articles dropped from the sorting mechanism 21 and discharging the articles to the transport conveyor 29. These sorting hoppers 24 and 25
Is provided with a gate mechanism 26 for opening and closing the lower opening.

The gate mechanism 26 is a mechanism comprising a drive motor 26a (see FIG. 4) and a gate member. The gate member is a member that can close the lower openings of the distribution hoppers 24 and 25, and rotates by the operation of the drive motor 26a. As the gate member rotates, the sorting hopper 2
The lower and upper openings 4 and 25 are switched between a closed state and an open state.

<Control Unit> The control unit 30 controls each drive motor and the electromagnetic feeder 17. The control unit 30 includes a CPU 31, a ROM 32, and a RAM 3, as shown in FIG.
3. A microcomputer including a hard disk (HDD) 34 and the like, and an operation panel 38 connected to the microcomputer. The operator can know the status of the apparatus from the liquid crystal display screen 38a also serving as the operation panel 38. The operator can also touch the display screen 38a or tap the separately provided operation keys to perform measurement. The control of the vessel 10 can be adjusted.

The control unit 30 includes each weighing hopper 13
The load cells 13c for measuring the weight of the articles inside are connected, and the weight data from each load cell 13c is sent to the control unit 30 as needed.

Also, the electromagnetic feeder 17, the drive motor 52 of each forced vertical feed mechanism 14, the drive motor 14c, the drive motor 13d of the gate mechanism 13b of each weighing hopper 13, the drive motor 71 of each distribution mechanism 21, and each distribution hopper The gate opening / closing drive motor 26a is connected to the control unit 30 and is configured to operate according to a command from the control unit 30. The control unit 30 issues an operation command or a stop command to each drive unit according to a built-in control program or an input from an operator, and according to a result of a combination calculation based on weight data from each load cell 13c.

<Operation (Control) of Combination Weighing Device of the Present Embodiment> Next, the operation of the combination weighing device 10 will be described. The combination weighing device 10 includes a weighing hopper 1 on each of the left and right sides.
3 and 10 forced vertical feed mechanisms 14, each of which can be moved independently or in conjunction with each other. However, since the operation contents are the same for both the left and right groups, only one group will be described here.

(Overall Movement) When an article is supplied to the input chute 18, the article falls from the lower opening of the input chute 18 to the common trough 16. And the electromagnetic feeder 1
7, the article is placed in the dish 16a of the common trough 16.
Move to the front of.

The articles are stored at the front of the common trough 16 and from there, pass through ten circular holes on the lower surface of the dish 16a.
It flows into the cylindrical portion 16b. The article that has flowed into the cylindrical portion 16b further flows into the upper space of the cylindrical member 14a, and hits the screw and stops. The article stopped by the screw is forcibly fed downward by the rotation of the drive motor 52 of the forced vertical feed mechanism 14. When the drive motor 52 rotates, the screw also rotates, and an article in an amount proportional to the rotation amount falls from the lower end of the screw to the upper surface of the gate member of the gate mechanism 14b. The control unit 30 controls each of the drive motors 52 so that the amount of the article becomes the optimal amount to be put into the weighing hopper 13.

The predetermined amount of articles held on the gate member of the gate mechanism 14b in this manner is
Is opened and is put into the weighing hopper 13. When an article is put into the weighing hopper 13, the weight is measured by the load cell 13c, and the weight data is sent to the control unit 30. The control unit 30 controls each load cell 13c.
The combination calculation is performed based on the measured weight data. For example,
It is set so that about 20 grams of articles are put into the weighing hopper 13, and a combination operation of selecting three weighing hoppers from the ten weighing hoppers 13 so that the total weight is 60 grams or more and close to 60 grams is performed. Do. When the combination of the weighing hoppers 13 having a predetermined weight is determined by this combination calculation, the gate mechanism 13b of the corresponding weighing hopper 13 is determined.
Is opened, and the article falls to the discharge collecting chute 19.
Then, the articles are collected into one by the discharge collecting chute 19 and are put into the storage space S of the sorting mechanism 21.

Discharge mechanism 2 from discharge collecting chute 19
As shown in FIG. 5, when the articles are put into the container 1, the sorting mechanism 21 is in a state where the lower opening of the tubular member 61 is closed by the bottom plate 62. Then, the articles temporarily stored in the storage space S are distributed to one of the distribution hoppers 24 and 25 by the operation of the drive motor 71 such that the tubular member 61 and the bottom plate 62 pivot away from each other.

The articles sorted to the sorting hoppers 24 and 25 are temporarily held there, and then, are moved to the gate mechanism 2.
6 is discharged to the transport conveyor 29 by opening and closing. (Details of Movement of Distributing Mechanism) Details of the movement of the distributing mechanism 21 will be described with reference to FIG.

As shown in FIG. 10A, articles collected by the discharge collecting chute 19 are temporarily stored in the sorting mechanism 21 in which the storage space S is formed. When the article is dropped to the hopper 25 side, first, as shown in FIG. 10B, the cylinder member 61 and the bottom plate 62 are turned to move the lower opening of the cylinder member 61 above the hopper 25, and the bottom plate 62 Is moved above the hopper 24. These turning movements are performed simultaneously by the operation of the drive motor 71.

Next, the control unit 30 finely changes the rotation direction of the drive motor 71 to cause the cylindrical member 61 and the bottom plate 62 to perform a fine reciprocating turning motion. Specifically, the reciprocating turning motion of shifting from the state of FIG. 10B to the state of FIG. 10C and returning to the state of FIG. 10D is repeated two or three times.
As a result, even in the case of a highly sticky article such as natto, what adheres to the tubular member 61 falls to the hopper 25.

When the above-described process of shaking off the article is completed, the control unit 30 returns the cylindrical member 61 and the bottom plate 62 to the original state. Then, the distribution mechanism 21 is configured as shown in FIG.
As shown in (e), the storage space S is formed, and the supply of the next article from the discharge collecting chute 19 is waited.

The mechanism by which the cylindrical member 61 and the bottom plate 62 rotate by the operation of the drive motor 71 is shown in FIGS.
As shown in FIGS. FIGS. 8 and 9 show the movement of the bottom plate 62 and the drive unit in a state where the tubular member 61 is removed for easy understanding. The cylindrical member 61 and the bottom plate 62 are guided by the movement of the rollers 75 and 76 of the drive unit, and rotate around the rotation axis 64 in directions opposite to each other.

<Characteristics of Distributing Mechanism> (1) Conventionally, a method has been adopted in which a plurality of bottom plates are provided for one cylinder and articles are distributed depending on which bottom plate is opened. When handling an article, there is a possibility that the article may adhere to the closed bottom plate and do not drop.

On the other hand, the sorting mechanism 21 adopts a method in which the cylinder member 61 is also moved, and the article is dropped by moving the cylinder member 61 and the bottom plate 62 to remove the bottom plate 62 from below the cylinder member 61. Let me. Further, the article attached to the bottom plate 62 is scraped off by the relative movement of the cylindrical member 61 and the bottom plate 62. For this reason, the articles hardly remain on the bottom plate 62, and almost all of the articles in the storage space S fall to one of the hoppers 24 and 25.

(2) In the sorting mechanism 21, the cylindrical member 61
In addition, the bottom plate 62 is moved together with the tubular member 61. Therefore, the amount of turning movement required to remove the bottom plate 62 from below the cylindrical member 61 is reduced, and the inclination θ (see FIG. 10B) of the cylindrical member 61 when dropping an article is relatively close to vertical. The angle of inclination can be kept.

(3) In the sorting mechanism 21, the cylindrical member 61
The cylindrical member 61 is pivoted so that the lower end of the cylinder swings. Therefore, the configuration of the driving unit is low-cost and compact (see FIGS. 5 and 7) as compared with the case where the cylindrical member 61 is moved in parallel.

(4) The distributing mechanism 21 is arranged so that the storage space S formed by the cylindrical member 61 and the bottom plate 62 spans the two hoppers 24 and 25 that are the distributing destinations. Also when distributing to 25, the amount of movement of the tubular member 61 and the bottom plate 62 can be kept small (see FIGS. 5 and 6). For this reason,
The distribution pitch can be narrowed, and this is an effective mechanism when responding to various distribution pitches.

(5) In the sorting mechanism 21, when the article is dropped on the hoppers 24 and 25, the cylinder member 61 is reciprocated (vibrated) slightly. For this reason, even when the article has adhesiveness and the article sticks to the tubular member 61 and is difficult to separate, most articles are sifted by the reciprocating movement of the tubular member 61.

If the cylindrical member 61 and the bottom plate 62 are separately driven, it is possible to vibrate only the cylindrical member 61. In this case, however, the driving source is only the driving motor 71 and the control is performed. The simplification, downsizing of the drive unit, and cost reduction are aimed at.

[Other Embodiments] (A) In the above embodiment, the present invention is applied to the sorting mechanism 21 for sorting the articles after being weighed, but the present invention sorts the articles before being weighed. The present invention can also be applied to a sorting mechanism.

For example, a configuration is such that charging to the weighing hopper 13 is performed via a distribution mechanism, and the distribution mechanism is configured as the above-described distribution mechanism 21 so that articles are distributed to the two weighing hoppers 13. It is also possible.

(B) In the above embodiment, not only the cylindrical member 61 but also the bottom plate 62 is moved, but it is also possible to adopt a structure in which the bottom plate is fixed.

For example, as shown in FIG.
May be arranged between the two hoppers 124 and 125 as the sorting destinations, and only the tubular member 161 is swiveled to drop the article on one of the hoppers 124 and 125. Also in this case, the article does not remain on the bottom plate 162, and the article can be reliably dropped by the reciprocating swinging motion of the tubular member 161.

In the case of employing a configuration in which only the cylindrical member 161 is moved, it is desirable to take measures such as increasing the turning radius so that the inclination of the cylindrical member 161 when the article is dropped does not become loose.

(C) Mesh processing, embossing, or the like is applied to a portion of each member (such as the cylindrical member 61 and the bottom plate 62) that comes into contact with the article, thereby further suppressing the adhesion of the article.

(D) In the above embodiment, an article such as natto is assumed, but the sorting mechanism 21 is extremely effective also for an article in which powder or the like during transportation adheres to the cylindrical member 61 or the like. is there.

(E) In the above embodiment, the attached article is sieved by reciprocating (vibrating) the cylinder member 61 to a small extent.
A configuration in which a rod or the like is applied to the cylinder member 61 from the side to apply a shock and cause the cylinder member 61 to vibrate may be employed.

Further, it is also possible to adopt a configuration in which the cylindrical member 61 and the bottom plate 62 are constantly vibrated by using an air vibrator or the like.

[0071]

According to the sorting mechanism according to the present invention, since the side wall is moved, the bottom can be removed from below the side wall by moving the side wall. Even if it has, the problem that the article remains on the bottom is reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a combination weighing device according to an embodiment of the present invention.

FIG. 2 is a top view of the combination weighing device.

FIG. 3 is a partial front sectional view of the combination weighing device.

FIG. 4 is a block diagram of a control unit.

FIG. 5 is a front view of a distribution mechanism.

FIG. 6 is a front view showing the operation of the distribution mechanism.

FIG. 7 is a side view of a distribution mechanism.

FIG. 8 is a front view of the sorting mechanism when a tubular member is removed.

FIG. 9 is a front view showing the operation of the sorting mechanism when the tubular member is removed.

FIG. 10 is a schematic front view showing the flow of the operation of the distribution mechanism.

FIG. 11 is a schematic front view showing an operation flow of a distribution mechanism according to another embodiment.

FIG. 12 is a schematic front view showing the flow of operation of a conventional distribution mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Combination weighing device (weighing device) 21 Distributing mechanism 24, 25 Distributing hopper (path) 30 Control part 61, 161 Tube member (side wall part) 62, 162 Bottom plate (bottom part) 71 Drive motor (drive means) S Storage space

Claims (5)

[Claims] 1. A weighing device sorting mechanism for temporarily storing articles before or after being weighed and distributing the articles to a plurality of paths arranged below, comprising: a side wall portion; A bottom part capable of forming a storage space for storing together with the side wall part; a driving means for moving at least the side wall part; and controlling the driving means to pivotally move the side wall part so that the lower end swings, and the article And a control unit that causes the control unit to fall into any one of the paths. 2. The sorting mechanism according to claim 1, wherein the side wall portion is formed by a substantially vertical surface, and the bottom portion is formed by a substantially horizontal curved surface so as not to hinder the swing of the side wall portion. . 3. The driving device according to claim 1, wherein the driving means moves both the side wall and the bottom so as to be away from each other.
Or the sorting mechanism according to 2. 4. The sorting mechanism according to claim 3, wherein the storage space formed by the side wall and the bottom is disposed above the two paths so as to straddle the two paths. 5. The control section controls the driving means,
The sorting mechanism according to any one of claims 1 to 4, wherein when the article is dropped on any of the paths, the side wall portion is vibrated on the path.